Colourful Roads Bug/Render issue

Ok while playing on this server for nearly 90 hours i have noticed some Colour roads bugs, this just basically is what it is called, some parts of roads are like rainbows and unicorns flying around it, i think it is a render issue

Check to make sure your graphics card drivers are up to date. Next, play with your in game graphics settings. Change things from 32 to 16 bit and different screen settings. I found out that switching from 32 to 16 stopped my game from crashing.